package com.itheima.service;

import com.alibaba.dubbo.config.annotation.Service;
import com.itheima.pojo.Member;
import com.itheima.pojo.Order;
import com.itheima.pojo.OrderSetting;
import com.itheima.constant.MessageConstant;
import com.itheima.dao.MemberDao;
import com.itheima.dao.OrderDao;
import com.itheima.dao.OrderSettingDao;
import com.itheima.entity.Result;
import com.itheima.utils.DateUtils;
import com.itheima.utils.LockUtils;
import org.apache.curator.framework.recipes.locks.InterProcessMutex;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;
import redis.clients.jedis.JedisPool;

import java.util.Date;
import java.util.List;
import java.util.Map;

@Service(interfaceClass = OrderService.class)
@Transactional
public class OrderServiceImpl implements OrderService {
    @Autowired
    private OrderDao orderDao;
    @Autowired
    private OrderSettingDao orderSettingDao;
    @Autowired
    private JedisPool jedisPool;
    @Autowired
    private MemberDao memberDao;

    @Override
    public Result submitOrder(Map map) throws Exception {
        //检查当前日期是否进行了预约设置
        String orderDate = (String) map.get("orderDate");
        Date date = DateUtils.parseString2Date(orderDate);
        OrderSetting orderSetting = orderSettingDao.findByOrderDate(date);
        if (orderSetting == null) {
            return new Result(false, MessageConstant.SELECTED_DATE_CANNOT_ORDER);
        }
        //检查预约日期是否预约已满
        int number = orderSetting.getNumber();//可预约人数
        int reservations = orderSetting.getReservations();// 已预约人数
        if (reservations >= number) {
            //预约已满，不能预约
            return new Result(false, MessageConstant.ORDER_FULL);
        }
        //检查当前用户是否为会员，根据手机号判断
        String telephone = (String) map.get("telephone");
        Member member = memberDao.findByTelephone(telephone);
        //防止重复预约
        if (member != null) {
            //根据setmealId和memberId和日期查询订单order中是否有对应的订单
            Integer memberId = member.getId();
            Integer setmealId = Integer.parseInt((String) map.get("setmealId"));
            Order order = new Order(memberId, date, null, null, setmealId);
            List<Order> orders = orderDao.findByCondition(order);
            if (orders != null || orders.size() > 0) {
                //已经完成了预约，不能重复预约
                return new Result(false, MessageConstant.HAS_ORDERED);
            }
        }


        //可以预约，设置预约人数加一
        InterProcessMutex lock = null;
        try {
            lock = LockUtils.getLock();
            lock.acquire();
            orderSetting.setReservations(orderSetting.getReservations() + 1);
            orderSettingDao.editReservationsByOrderDate(orderSetting);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            assert lock != null;
            lock.release();
        }

        if (member == null) {
            //当前用户不是会员，需要添加到会员表
            member = new Member();
            member.setName((String) map.get("name"));
            member.setPhoneNumber(telephone);
            member.setIdCard((String) map.get("idCard"));
            member.setSex((String) map.get("sex"));
            member.setRegTime(new Date());
            memberDao.add(member);
        }
        //保存预约信息到预约表
        Order order = new Order(member.getId(), date
                , (String) map.get("orderType")
                , Order.ORDERSTATUS_NO, Integer.parseInt((String) map.get("setmealId")));
        orderDao.add(order);

        return new Result(true, MessageConstant.ORDER_SUCCESS, order.getId());
    }

    public Map findOrderById(Integer id) throws Exception {

        Map map = orderDao.findOrderById(id);
        if (map != null) {
            //处理日期格式
            Date orderDate = (Date) map.get("orderDate");
            map.put("orderDate", DateUtils.parseDate2String(orderDate));
        }
        return map;
    }
}
